FIX: Dont assume stim channel default
Merge pull request #1251 from Eric89GXL/stim-fix

FIX: Dont assume stim channel default
FIX: drop cals
_BaseRaw
_BaseRaw ii
Merge pull request #1253 from dengemann/fix_drop_pick_channels

FIX: drop cals
ENH/FIX: EGI event handling
FIX py3k warning